diff options
Diffstat (limited to 'src/platformsupport/edid/qedidparser.cpp')
| -rw-r--r-- | src/platformsupport/edid/qedidparser.cpp | 174 |
1 files changed, 0 insertions, 174 deletions
diff --git a/src/platformsupport/edid/qedidparser.cpp b/src/platformsupport/edid/qedidparser.cpp deleted file mode 100644 index 6bf1f1db96..0000000000 --- a/src/platformsupport/edid/qedidparser.cpp +++ /dev/null @@ -1,174 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2017 Pier Luigi Fiorini <pierluigi.fiorini@gmail.com> -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the plugins of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 3 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL3 included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 3 requirements -** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 2.0 or (at your option) the GNU General -** Public license version 3 or any later version approved by the KDE Free -** Qt Foundation. The licenses are as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 -** included in the packaging of this file. Please review the following -** information to ensure the GNU General Public License requirements will -** be met: https://www.gnu.org/licenses/gpl-2.0.html and -** https://www.gnu.org/licenses/gpl-3.0.html. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include <QtCore/QFile> - -#include "qedidparser_p.h" -#include "qedidvendortable_p.h" - -#define EDID_DESCRIPTOR_ALPHANUMERIC_STRING 0xfe -#define EDID_DESCRIPTOR_PRODUCT_NAME 0xfc -#define EDID_DESCRIPTOR_SERIAL_NUMBER 0xff - -#define EDID_OFFSET_DATA_BLOCKS 0x36 -#define EDID_OFFSET_LAST_BLOCK 0x6c -#define EDID_OFFSET_PNP_ID 0x08 -#define EDID_OFFSET_SERIAL 0x0c -#define EDID_PHYSICAL_WIDTH 0x15 -#define EDID_OFFSET_PHYSICAL_HEIGHT 0x16 - -QT_BEGIN_NAMESPACE - -QEdidParser::QEdidParser() -{ - // Cache vendors list from pnp.ids - const QString fileName = QLatin1String("/usr/share/hwdata/pnp.ids"); - if (QFile::exists(fileName)) { - QFile file(fileName); - - if (file.open(QFile::ReadOnly)) { - while (!file.atEnd()) { - QString line = QString::fromUtf8(file.readLine()).trimmed(); - - if (line.startsWith(QLatin1Char('#'))) - continue; - - QStringList parts = line.split(QLatin1Char('\t')); - if (parts.count() > 1) { - QString pnpId = parts.at(0); - parts.removeFirst(); - m_vendorCache[pnpId] = parts.join(QLatin1Char(' ')); - } - } - - file.close(); - } - } -} - -bool QEdidParser::parse(const QByteArray &blob) -{ - const quint8 *data = reinterpret_cast<const quint8 *>(blob.constData()); - const size_t length = blob.length(); - - // Verify header - if (length < 128) - return false; - if (data[0] != 0x00 || data[1] != 0xff) - return false; - - /* Decode the PNP ID from three 5 bit words packed into 2 bytes - * /--08--\/--09--\ - * 7654321076543210 - * |\---/\---/\---/ - * R C1 C2 C3 */ - char pnpId[3]; - pnpId[0] = 'A' + ((data[EDID_OFFSET_PNP_ID] & 0x7c) / 4) - 1; - pnpId[1] = 'A' + ((data[EDID_OFFSET_PNP_ID] & 0x3) * 8) + ((data[EDID_OFFSET_PNP_ID + 1] & 0xe0) / 32) - 1; - pnpId[2] = 'A' + (data[EDID_OFFSET_PNP_ID + 1] & 0x1f) - 1; - QString pnpIdString = QString::fromLatin1(pnpId, 3); - - // Clear manufacturer - manufacturer = QString(); - - // Serial number, will be overwritten by an ASCII descriptor - // when and if it will be found - quint32 serial = data[EDID_OFFSET_SERIAL] - + (data[EDID_OFFSET_SERIAL + 1] << 8) - + (data[EDID_OFFSET_SERIAL + 2] << 16) - + (data[EDID_OFFSET_SERIAL + 3] << 24); - if (serial > 0) - serialNumber = QString::number(serial); - else - serialNumber = QString(); - - // Parse EDID data - for (int i = 0; i < 5; ++i) { - const uint offset = EDID_OFFSET_DATA_BLOCKS + i * 18; - - if (data[offset] != 0 || data[offset + 1] != 0 || data[offset + 2] != 0) - continue; - - if (data[offset + 3] == EDID_DESCRIPTOR_PRODUCT_NAME) - model = parseEdidString(&data[offset + 5]); - else if (data[offset + 3] == EDID_DESCRIPTOR_ALPHANUMERIC_STRING) - identifier = parseEdidString(&data[offset + 5]); - else if (data[offset + 3] == EDID_DESCRIPTOR_SERIAL_NUMBER) - serialNumber = parseEdidString(&data[offset + 5]); - } - - // Try to use cache first because it is potentially more updated - manufacturer = m_vendorCache.value(pnpIdString); - if (manufacturer.isEmpty()) { - // Find the manufacturer from the vendor lookup table - for (const auto &vendor : q_edidVendorTable) { - if (strncmp(vendor.id, pnpId, 3) == 0) { - manufacturer = QString::fromUtf8(vendor.name); - break; - } - } - } - - // If we don't know the manufacturer, fallback to PNP ID - if (manufacturer.isEmpty()) - manufacturer = pnpIdString; - - // Physical size - physicalSize = QSizeF(data[EDID_PHYSICAL_WIDTH], data[EDID_OFFSET_PHYSICAL_HEIGHT]) * 10; - - return true; -} - -QString QEdidParser::parseEdidString(const quint8 *data) -{ - QByteArray buffer(reinterpret_cast<const char *>(data), 13); - - // Erase carriage return and line feed - buffer = buffer.replace('\r', '\0').replace('\n', '\0'); - - // Replace non-printable characters with dash - for (int i = 0; i < buffer.count(); ++i) { - if (buffer[i] < '\040' || buffer[i] > '\176') - buffer[i] = '-'; - } - - return QString::fromLatin1(buffer.trimmed()); -} - -QT_END_NAMESPACE |